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The radiation insie the cavity of a blak bo 1イ corwidened t﹄ co nsint of standi ing wa vese, havi huing r0 fstad The averag total ens o the rad'aton cen be the ae a the nad st obtained multi ene the soks y the num modes the radiation in intrva The numbsrm modes ave ound to ba 3 So, ene ,CE>..JEe_ E/ k eeh 飞 Ou
exp (-ho, KT) <E;> わ[email protected]っn ~ e n we knon and Σχ ㄧㄨ hv exp(-ho/T) 2 2 ihin i Hhe P Lanek's odiation Caus
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